The inferior most, or the lowest, sinus cavity is called the maxillary sinus. It is also the largest sinus cavity and it drains into the middle of the nose. The maxillary sinus is located above the upper jaw and is easily visible on x-rays above the premolar and the molar teeth.
The symptoms of sinusitis include headaches near the sinus and discharge of foul-smelling mucus.
It’s Microgravity it says it on NASA‘s website
I’m guessing Asia and North America to be closer
Weathering breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water, wind and ice. There are two types of weathering: mechanical and chemical.
